Sindhi is the language of the Sindh region of South Asia, which is now a province of Pakistan. It is an Indo-Aryan language spoken by approximately 35 million people in Pakistan, and 2.8 million in India; it is also a recognised official language in both of these countries. Although the language is predominantly Indo-Aryan, it also shows up signs of Dravidian influence, making it unique in its importance and identity. Most Sindhi speakers in Pakistan are concentrated in Sindh.

The remaining speakers are found spread throughout the many areas of the world (mainly other parts of India) to which members of an ethnic group migrated when Sindh became a part of Pakistan during the partition of British India in 1947. The language is written using the modified Arabic script. In 1948, the Government of India implemented the Devanagari-script for Sindhi that did not get wide acceptance.